怎样在onclick事件中传值？（在线=）

Question

<a href="index_bblb_xx.aspx" onclick="Session['aaa'] = 'aaa';">aaaaa</a>我是想在页面上点击连接后在session["aaa"]中放个值

Answer 1

up
up
up
up
up

Answer 2

try
<a id="link1" href="index_bblb_xx.aspx" runat="server">aaaaa</a>page_load
if(!Page.IsPostBack)
{
     this.link1.Attributes.Add("onclick",Session['aaa'] = 'aaa');
}

Answer 3

不知道，你具体想做什么，照本人理解，是这样些个隐藏域，把值付给隐藏域，然后在通过JS调用。
<input id="ok" type="hidden" runat="server">.cs
if(Session['aaa']!=null)
{
   ok.Value = Session['aaa'].ToString();
}
this.link1.Attributes.Add("onclick","javascript:check()");.aspx
function check()
{
 strValue = ok.value;
}

Answer 4

up
up
up
up
up

Answer 5

我的意思是
一个链接，点一下，生成一个session
但是因为这个连接又是动态生成的，所以不能用Attributes

Answer 6

呵呵，楼主不会想像模拟登陆一样进入需要验证的网页吧？呵呵，如果是这样恐怕难度有些大，呵呵。JS里面好像不能用SESSION吧，学习一下

Answer 7

用个隐藏的input，设为服务器端运行， js可以访问它的值，后台代码C#也能访问

Answer 8

你想实现功能，说清楚点
也许没这么麻烦
学习asp.net的资料
http://218.27.204.17/aspnet/a_user.aspx

Answer 9

<a href="index_bblb_xx.aspx ? xx=aa " onclick="Session['aaa'] = 'aaa';">aaaaa</a>
在index_bblb_xx.aspx  获得页面参数 然后处理 
这样应该灵活点

Answer 10

private void DropDownList1_SelectedIndexChanged(object sender, System.EventArgs e)
{
if(label_isstu.Text=="学生")
{
string strConnection="server=(local);database=temp;uid=sa;password=;";
string strSQL ="exec Tstu_oncou '" + Request.Form["DropDownList1"] + "','" + label_user.Text + "'"; SqlConnection objConnection=new SqlConnection (strConnection);
SqlCommand objCommand=new SqlCommand(strSQL,objConnection); objConnection.Open ();
CheckBoxList1.DataSource = objCommand.ExecuteReader ();
CheckBoxList1.DataTextField ="cou_name";
CheckBoxList1.DataBind ();
objConnection.Close (); }
else 
{ ListItem li2=DropDownList2.SelectedItem;
ListItem li3=DropDownList3.SelectedItem;
ListItem li4=DropDownList4.SelectedItem;
//***************************************************************
string strConnection="server=(local);database=temp;uid=sa;password=;";
string strSQL ="exec change_ondep '" + Request.Form["DropDownList1"] + "','" + Request.Form["DropDownList3"] + "','" + Request.Form["DropDownList4"] + "','" + str_dep + "'"; SqlConnection objConnection=new SqlConnection (strConnection);
SqlCommand objCommand=new SqlCommand(strSQL,objConnection); objConnection.Open ();
DropDownList2.DataSource = objCommand.ExecuteReader();
DropDownList2.DataTextField ="dep_name";
DropDownList2.DataBind ();
objConnection.Close (); DropDownList2.Items.Insert(0,"全部");
DropDownList2.SelectedIndex=DropDownList2.Items.IndexOf(li2);


//*****************************************************************************
//string strConnection="server=(local);database=temp;uid=sa;password=;";
string strSQL2 ="exec change_ongrade '" + Request.Form["DropDownList1"] + "','" + Request.Form["DropDownList2"] + "','" + Request.Form["DropDownList4"] + "','" + str_grade + "'"; //SqlConnection objConnection=new SqlConnection (strConnection);
objCommand=new SqlCommand(strSQL2,objConnection); objConnection.Open ();
DropDownList3.DataSource = objCommand.ExecuteReader ();
DropDownList3.DataTextField ="grade";
DropDownList3.DataBind ();
objConnection.Close (); DropDownList3.Items.Insert(0,"全部");
DropDownList3.SelectedIndex=DropDownList3.Items.IndexOf(li3);
//**************************************************************************
string strSQL3 ="exec change_onclass '" + Request.Form["DropDownList1"] + "','" + Request.Form["DropDownList2"] + "','" + Request.Form["DropDownList3"] + "','" + str_class + "'"; objCommand=new SqlCommand(strSQL3,objConnection); objConnection.Open ();
DropDownList4.DataSource = objCommand.ExecuteReader ();
DropDownList4.DataTextField ="class";
DropDownList4.DataBind ();
objConnection.Close (); DropDownList4.Items.Insert(0,"全部");
DropDownList4.SelectedIndex=DropDownList4.Items.IndexOf(li4);
//******************************************************************
string strSQL4 ="exec change_oncou '" + Request.Form["DropDownList1"] + "','" + Request.Form["DropDownList2"] + "','" + Request.Form["DropDownList3"] + "','" + Request.Form["DropDownList4"] + "','" + str_cou + "'"; objCommand=new SqlCommand(strSQL4,objConnection); objConnection.Open ();
CheckBoxList1.DataSource = objCommand.ExecuteReader ();
CheckBoxList1.DataTextField ="cou_name";
CheckBoxList1.DataBind ();
objConnection.Close ();
} } private void DropDownList2_SelectedIndexChanged(object sender, System.EventArgs e)
{ ListItem li1=DropDownList1.SelectedItem;
ListItem li3=DropDownList3.SelectedItem;
ListItem li4=DropDownList4.SelectedItem;
//****************************************************************
string strConnection="server=(local);database=temp;uid=sa;password=;";
string strSQL ="exec change_onscore_time '" + Request.Form["DropDownList2"] + "','" + Request.Form["DropDownList3"] + "','" + Request.Form["DropDownList4"] + "','" + str_score_time + "'";

SqlConnection objConnection=new SqlConnection (strConnection);
SqlCommand objCommand=new SqlCommand(strSQL,objConnection); objConnection.Open ();
DropDownList1.DataSource = objCommand.ExecuteReader();
DropDownList1.DataTextField ="score_time";
DropDownList1.DataBind ();
objConnection.Close ();

DropDownList1.Items.Insert(0,"全部");
DropDownList1.SelectedIndex=DropDownList1.Items.IndexOf(li1);


//*************************************************************
//string strConnection="server=(local);database=temp;uid=sa;password=;";
string strSQL2 ="exec change_ongrade '" + Request.Form["DropDownList1"] + "','" + Request.Form["DropDownList2"] + "','" + Request.Form["DropDownList4"] +"','" + str_grade + "'";

//SqlConnection objConnection=new SqlConnection (strConnection);
objCommand=new SqlCommand(strSQL2,objConnection); objConnection.Open ();
DropDownList3.DataSource = objCommand.ExecuteReader();
DropDownList3.DataTextField ="grade";
DropDownList3.DataBind ();
objConnection.Close (); DropDownList3.Items.Insert(0,"全部");
DropDownList3.SelectedIndex=DropDownList3.Items.IndexOf(li3);
//************************************************************************
string strSQL3 ="exec change_onclass '" + Request.Form["DropDownList1"] + "','" + Request.Form["DropDownList2"] + "','" + Request.Form["DropDownList3"] + "','" + str_class + "'";

objCommand=new SqlCommand(strSQL3,objConnection); objConnection.Open ();
DropDownList4.DataSource = objCommand.ExecuteReader();
DropDownList4.DataTextField ="class";
DropDownList4.DataBind ();
objConnection.Close (); DropDownList4.Items.Insert(0,"全部");
DropDownList4.SelectedIndex=DropDownList4.Items.IndexOf(li4);
//******************************************************************
string strSQL4 ="exec change_oncou '" + Request.Form["DropDownList1"] + "','" + Request.Form["DropDownList2"] + "','" + Request.Form["DropDownList3"] + "','" + Request.Form["DropDownList4"] + "','" + str_cou + "'"; objCommand=new SqlCommand(strSQL4,objConnection); objConnection.Open ();
CheckBoxList1.DataSource = objCommand.ExecuteReader ();
CheckBoxList1.DataTextField ="cou_name";
CheckBoxList1.DataBind ();
objConnection.Close ();

} private void DropDownList3_SelectedIndexChanged(object sender, System.EventArgs e)
{            ListItem li1=DropDownList1.SelectedItem;
ListItem li2=DropDownList2.SelectedItem;
ListItem li4=DropDownList4.SelectedItem;

Answer 11

//*****************************************************************
string strConnection="server=(local);database=temp;uid=sa;password=;";
string strSQL ="exec change_onscore_time '" + Request.Form["DropDownList2"] + "','" + Request.Form["DropDownList3"] + "','" + Request.Form["DropDownList4"] + "','" + str_score_time + "'";

SqlConnection objConnection=new SqlConnection (strConnection);
SqlCommand objCommand=new SqlCommand(strSQL,objConnection); objConnection.Open ();
DropDownList1.DataSource = objCommand.ExecuteReader();
DropDownList1.DataTextField ="score_time";
DropDownList1.DataBind ();
objConnection.Close ();
DropDownList1.Items.Insert(0,"全部");
DropDownList1.SelectedIndex=DropDownList1.Items.IndexOf(li1);
//****************************************************************
//string strConnection="server=(local);database=temp;uid=sa;password=;";
string strSQL2 ="exec change_ondep '" + Request.Form["DropDownList1"] + "','" + Request.Form["DropDownList3"] + "','" + Request.Form["DropDownList4"] + "','" + str_dep + "'"; //SqlConnection objConnection=new SqlConnection (strConnection);
objCommand=new SqlCommand(strSQL2,objConnection); objConnection.Open ();
DropDownList2.DataSource = objCommand.ExecuteReader();
DropDownList2.DataTextField ="dep_name";
DropDownList2.DataBind ();
objConnection.Close (); DropDownList2.Items.Insert(0,"全部");
DropDownList2.SelectedIndex=DropDownList2.Items.IndexOf(li2);
//******************************************************************
string strSQL3 ="exec change_onclass '" + Request.Form["DropDownList1"] + "','" + Request.Form["DropDownList2"] + "','" + Request.Form["DropDownList3"] + "','" + str_class + "'"; objCommand=new SqlCommand(strSQL3,objConnection); objConnection.Open ();
DropDownList4.DataSource = objCommand.ExecuteReader();
DropDownList4.DataTextField ="class";
DropDownList4.DataBind ();
objConnection.Close (); DropDownList4.Items.Insert(0,"全部");
DropDownList4.SelectedIndex=DropDownList4.Items.IndexOf(li4);
//************************************************************
string strSQL4 ="exec change_oncou '" + Request.Form["DropDownList1"] + "','" + Request.Form["DropDownList2"] + "','" + Request.Form["DropDownList3"] + "','" + Request.Form["DropDownList4"] + "','" + str_cou + "'"; objCommand=new SqlCommand(strSQL4,objConnection); objConnection.Open ();
CheckBoxList1.DataSource = objCommand.ExecuteReader ();
CheckBoxList1.DataTextField ="cou_name";
CheckBoxList1.DataBind ();
objConnection.Close ();

} private void DropDownList4_SelectedIndexChanged(object sender, System.EventArgs e)
{ ListItem li1=DropDownList1.SelectedItem;
ListItem li2=DropDownList2.SelectedItem;
ListItem li3=DropDownList3.SelectedItem;
//*****************************************************************
string strConnection="server=(local);database=temp;uid=sa;password=;";
string strSQL ="exec change_onscore_time '" + Request.Form["DropDownList2"] + "','" + Request.Form["DropDownList3"] + "','" + Request.Form["DropDownList4"] + "','" + str_score_time + "'";

SqlConnection objConnection=new SqlConnection (strConnection);
SqlCommand objCommand=new SqlCommand(strSQL,objConnection); objConnection.Open ();
DropDownList1.DataSource = objCommand.ExecuteReader();
DropDownList1.DataTextField ="score_time";
DropDownList1.DataBind ();
objConnection.Close ();

DropDownList1.Items.Insert(0,"全部");
DropDownList1.SelectedIndex=DropDownList1.Items.IndexOf(li1);
//**********************************************************
//string strConnection="server=(local);database=temp;uid=sa;password=;";
string strSQL2 ="exec change_ondep '" + Request.Form["DropDownList1"] + "','" + Request.Form["DropDownList3"] + "','" + Request.Form["DropDownList4"] + "','" + str_dep + "'"; //SqlConnection objConnection=new SqlConnection (strConnection);
objCommand=new SqlCommand(strSQL2,objConnection); objConnection.Open ();
DropDownList2.DataSource = objCommand.ExecuteReader();
DropDownList2.DataTextField ="dep_name";
DropDownList2.DataBind ();
objConnection.Close (); DropDownList2.Items.Insert(0,"全部");
DropDownList2.SelectedIndex=DropDownList2.Items.IndexOf(li2);
//******************************************************************
string strSQL3 ="exec change_ongrade '" + Request.Form["DropDownList1"] + "','" + Request.Form["DropDownList2"] + "','" + Request.Form["DropDownList4"] +"','" + str_grade + "'";

objCommand=new SqlCommand(strSQL3,objConnection); objConnection.Open ();
DropDownList3.DataSource = objCommand.ExecuteReader();
DropDownList3.DataTextField ="grade";
DropDownList3.DataBind ();
objConnection.Close (); DropDownList3.Items.Insert(0,"全部");
DropDownList3.SelectedIndex=DropDownList3.Items.IndexOf(li3);

Answer 12

//*****************************************************************
string strSQL4 ="exec change_oncou '" + Request.Form["DropDownList1"] + "','" + Request.Form["DropDownList2"] + "','" + Request.Form["DropDownList3"] + "','" + Request.Form["DropDownList4"] + "','" + str_cou + "'"; objCommand=new SqlCommand(strSQL4,objConnection); objConnection.Open ();
CheckBoxList1.DataSource = objCommand.ExecuteReader ();
CheckBoxList1.DataTextField ="cou_name";
CheckBoxList1.DataBind ();
objConnection.Close ();

} private void Button2_Click(object sender, System.EventArgs e)
{
if(true)
{
string strConnection="server=(local);database=temp;uid=sa;password=;";
string strSQL ="exec load_score_time '" + label_user.Text + "','" + label_isstu.Text + "'";
SqlConnection objConnection=new SqlConnection (strConnection);
SqlCommand objCommand=new SqlCommand(strSQL,objConnection); objConnection.Open ();
DropDownList1.DataSource = objCommand.ExecuteReader ();
DropDownList1.DataTextField ="score_time";
DropDownList1.DataBind ();
objConnection.Close (); DropDownList1.Items.Insert(0,"全部");
DropDownList1.Items[0].Selected=true; } if(true)
{
if(label_isstu.Text=="学生")
{
//do nothing

}
else
{
string strConnection="server=(local);database=temp;uid=sa;password=;";
string strSQL ="exec load_dep '" + label_user.Text + "','" + label_isstu.Text + "'";
SqlConnection objConnection=new SqlConnection (strConnection);
SqlCommand objCommand=new SqlCommand(strSQL,objConnection); objConnection.Open ();
DropDownList2.DataSource = objCommand.ExecuteReader ();
DropDownList2.DataTextField ="dep_name";
DropDownList2.DataBind ();
objConnection.Close ();

DropDownList2.Items.Insert(0,"全部");
DropDownList2.Items[0].Selected=true; }
} if(true)
{
if(label_isstu.Text=="学生")
{
//do nothing

}
else
{
string strConnection="server=(local);database=temp;uid=sa;password=;";
string strSQL ="exec load_grade '" + label_user.Text + "','" + label_isstu.Text + "'";
SqlConnection objConnection=new SqlConnection (strConnection);
SqlCommand objCommand=new SqlCommand(strSQL,objConnection); objConnection.Open ();
DropDownList3.DataSource = objCommand.ExecuteReader ();
DropDownList3.DataTextField ="grade";
DropDownList3.DataBind ();
objConnection.Close ();

DropDownList3.Items.Insert(0,"全部");
DropDownList3.Items[0].Selected=true; }
} if(true)
{
if(label_isstu.Text=="学生")
{
//do nothing

}
else
{
string strConnection="server=(local);database=temp;uid=sa;password=;";
string strSQL ="exec load_class '" + label_user.Text + "','" + label_isstu.Text + "'";
SqlConnection objConnection=new SqlConnection (strConnection);
SqlCommand objCommand=new SqlCommand(strSQL,objConnection); objConnection.Open ();
DropDownList4.DataSource = objCommand.ExecuteReader ();
DropDownList4.DataTextField ="class";
DropDownList4.DataBind ();
objConnection.Close ();

DropDownList4.Items.Insert(0,"全部");
DropDownList4.Items[0].Selected=true; }
} if(true)
{
string strConnection="server=(local);database=temp;uid=sa;password=;";
string strSQL ="exec load_cou '" + label_user.Text + "','" + label_isstu.Text + "'";
SqlConnection objConnection=new SqlConnection (strConnection);
SqlCommand objCommand=new SqlCommand(strSQL,objConnection); objConnection.Open ();
CheckBoxList1.DataSource = objCommand.ExecuteReader ();
CheckBoxList1.DataTextField ="cou_name";
CheckBoxList1.DataBind ();
objConnection.Close ();

} if(true)
{
if(label_isstu.Text=="学生")
{
//do nothing

}
else
{
TextBox1.Text=""; }
} } private void CheckBoxList1_SelectedIndexChanged(object sender, System.EventArgs e)
{
//do nothing

} private void Button3_Click(object sender, System.EventArgs e)
{
//全选
for(int i=0;i < CheckBoxList1.Items.Count;i++)
{
CheckBoxList1.Items[i].Selected=true; } } private void Button4_Click(object sender, System.EventArgs e)
{
//全不选
for(int i=0;i < CheckBoxList1.Items.Count;i++)
{
CheckBoxList1.Items[i].Selected=false; }

}
}
}